Which Country Transports the Most Freight by Railways?

Based on a comparison of 80 countries in 2015,
USA ranked the highest in railways transport freight measured by mil tonne-km with 2,547,253 mil tonne-km
followed by Russia and China.
On the other end of the scale was
Burkina Faso with 1.00 mil tonne-km,
Sudan with 33.0 mil tonne-km
and Albania with 46.0 mil tonne-km.